MTN - No resolution

My first mobile contract was and is with MTN since 1994. I have not had issues and I believed my service provider was a good one. I could replenish my data and voice minutes by calling 135 and get additional information.

A couple of months ago MTN went onto a new system and my additional recurring voice minutes disappeared. And suddenly I am stuck with a useless contract. My "Spend" is R36.00 and I am not able to get recurring voice minutes due to my contract type. I have not struggled to get an answer out of any company I have dealt with in 35 years. This is another type of difficult. I have mailed MTN. I have called MTN and I have been into a branch, with zero success, nada, ziltsh. No success at all. All I want is for the spend amount to be increased to a reasonable amount. My fist email was sent on 26 June 2020. I get mails back saying they received my mail, they'll ask for my information and give a little list which I completed a couple of times, I ask them to increase the spend and add recurring voice minutes to the value of R200,00. The its silent like a grave, until I follow up again a couple of days later with the same request and this entire thing plays out again.

I get a reference numbers:

Re: [#***]. Re: Increase Spend to R200.00 [#***] Re: [#***] Re: Please load voice airtime [#***]